Inseam trimming machine



y 1%, 193831 A. R. MQRRILL INSEAM THIMMING MACHINE Filed Oct. 21, 1930 2 Sheets-Sheet l MEI/Ma May 16, 1933. A. R. MORRILL INSEAM TRIMM'ING MACHINE Filed Oct. 21, 1930 2 Sheets=Sheet 2 Mizzeas Patented May 16, 1933 UNITED STATES PATE T- OFFICE ALFRED R. MORRILL, OF SXVAMPSCOTT, MASSACHUSETTS, ASSIGNOE TO UNITED f MACHINERY CORPORATION, OF PATEESON, NEW JERSEY, A CORPORATION OF NEW JERSEY INSEAM TRIMMING MACHINE Application filed October 21, 1930, Serial No. 490,136. I

The present invention relates to inseam trimming machines which are used in the manufacture of shoes, and more particularly in the manufacture of welt shoes to tr1m the surplus material projecting beyond the line of stitches connecting the WGlt'ZHlCl upper to the lip of the insole.

l The object of the invention is to provide a simple, efiicient and practical machine for trimming the inseam of a shoe and simultaneously pounding 'or beating out the trimmed seam.

Inseam trimming machines have heretofore been devised in which mechanism was provided for beating out the welt simultaneously with the inseam trimming operation. In these machines, however, the welt beating device, usually in the form of a vibrating hammer, has been arranged to act in advance of the trimming knife, that is, the vibrating hammer has been located on the side of the knife towards which the shoe is fed, and the construction and arno device for beating out the trimmedinseam could be applied to the machine wlthout locating the device at such a distance from the cutting edge of the knife as to bring it outside of the path of the trimmed inseam as the shoe was manipulated to transfer the cut around the shoe. This is particularly true of those machines in which the trimming knife is cylindrical or crown shape.

The several features of the present invention are herein disclosed as embodied in an inseam trimming machine, the trimming knife of which is cylindrical or crown shape, and in order to cause the inseam beating device to engage the trimmed inseam close to the cutting edge of the knife or, in other words, in close proximity to the untrimmed portion of the inseam, the knife blade or cutting portion of the knife has been provided with a series of recesses or openings and a vibratory beater has been provided together with means for actuating itin timed relation to the rotation of the knife so that the beater ,movesthrough the rangement of the parts has been such that openings in the knife into engagement with the trimmed portion of the inseam. The vibratory beater thus moves in a path intersecting the path of the knife blade and engages the trimmed portion of the'inseam in the desired proximity to the untrimmed portion, interference of the knife with the beater being prevented by the relative timing of the parts. It is to be understood,how-

ever that in its broader aspects, the inven-- tion contemplates any construction and arrangement of inseam trlmming knife and vibratory beater in which the beater acts on the trimmed seam and moves in a path intersecting that of the knife. It is also to be understood that in a construction compris ng a cyllndrlcal or crown shape knife other constructions and arrangements of the this result being accomplished by providing the welt beater with a lateral projection shaped to engage the inseam and'extending within the periphery of the knife; This simple, compact and efiicient arrangement of parts whereby both the welt and the trimmed portion of the inseam are beaten: out simultaneously with the trimming operation is also considered to be a feature of the present invention.

In addition to the features of invention above referred to, the present invention also consists in thedevices, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description taken in connection with the accompanying drawings in which Fig. l is a view in front elevation of the head of an inseam trimming machine; Fig. 2 is a view in right side elevation of substantially the parts shown in Fig. 1, showing particularly the actuating mech- 5 anisms for the rotary knife and the beater lever in dotted lines; Fig. 3 is-adetail perspective view showing the manner in which the shoe is guided and operated upon during the inseam trimming and beating operation; Fig.4 is a detail plan view of the beater lever; and Fig. is a detail sectionalview knife mounted to operate across the line ofv feed of the shoe which is accurately positioned with relation to the knife by means of 5 a crease guide engaging between the upper and welt portion of the shoe and by means of a channel guide roll which engages inside the inseam and is given a rotary movement to feed or assist in feeding the work. Dur-' 0 ing the trimming operation, the shoe is also subjected to the action of a vibratory welt beater which is driven through connections from the main cam shaft of the machine. Referring to. the drawings, a trimming knife is indicated at 8, a feeding and channel guide roll at 10, a crease guide at 12, and a heater lever at 14. The trimmlng knife 8 is mounted on a sleave 16 journaled on a shaft 18 secured in an adjustable carriage 20 and is driven from a shaft 22 which constitutes the main shaft of the head of the machine through connections comprising a stub shaft 24 which is provided at one end with a beveled gear 26 engaging with a corresponding gear 28 on the cam shaft 22 and at its other end with a beveled gear 30 which engages with a gear 32 formed on the sleeve 16, as indicated in dotted lines in Figs. 1 and 2 of the drawings.

. The roll 10 is mounted on the lower end of 86 which is pivoted on bearing pins 38 to swing about a horizontal axis. The shaft 34 carries at its upper end a gear 39 meshing with a gear 40 mounted on the machine frame and which in turn meshes with a gear 42 fixed to one end of a shaft 44 which is driven through a spiral gear 46 from the main driving shaft 22. The position of the O hanger 36 is adjustably determined in accordance with the requirements of the work being operated on by means of a bolt 48 pivotally mounted at 50 on the machine frame and a wing nut 52.

5 The heater lever 14 for pounding down portions of the shoe sole is mounted as in the above-mentioned patents to oscillate about a pivot 54 and at its rear end is connected by a short downwardly extending link 56 to the lower end of a vibrating lever 58. This lever ispivotally mounted at 60 and at its upperend-takes the form of a frame embracing a three-faced cam 62 on the shaft 22.

present invention in this machine, a novel and improved construction and arrangement of the trimming knife and the beater mechanism has been provided to permit the pounding out of the trimmed portion of the inseam simultaneously with the trimming and welt beating operations. To this end, the beater lever 14 at its forward ex tremity has a laterally offset finger 64 which extends within the periphery of the knife and is adapted to come into contact with the trimmed portion of the inseam beyond the cutting edge of the knife and beneath the chip removed from the shoe by the knife, as indicated in Fig. 3. In order to cooperate with the beater lever to enable the finger 64 to come into contact freely with the trimmed inseam, the blade of the circular trimming knife 8 is provided with recesses or openings 66 through which the finger 64 is permitted to pass during the rapid vibratory movement of the beater lever 14. 'Since. the rotary movement of the knife and the vibratory movement of the beater lever 14 are both controlled from the cam shaft 22 and therefore operate in timed relation to each other, the recesses 66 in the knife are spaced to insure that the finger 64 will register accurately with these openings to pound down the trimmed portion of the inseam during the operation of the machine. The work engaging surface of the finger 64 for pounding down the inseam is inclined slightly in the direction of feed to insure the proper cooperation of the parts to effectually pound down the trimmed inseam as the shoe is fed past the operating devices. 7

With the construction and arrangement of the trimming knife and the beater mechanism above described, an inseam trimming machine has been developed which is capable of simultaneously pounding out the welt and the trimmed portion of theinseam during the inseam trimming operation and at the same time retains the most advantageous features of the present commercial machines including the crown-shaped rotary trimming knife and the vibratory beater lever which is placed in close proximity to andin advance of the knife to cause these operating devices to engage with the work at nearly the same point on the shoe so that no difticulty is encountered in presenting the curved portions of the shoe and more particularly the toe to the operating elements.

The nature and scope of the invention having been indicated, and a machine embodying the several features of the invention having been specifically described, what is claimed is:

1. An inseam trimming machine having,

in combination, an inseam trimming knife moving transversely to the inseam, and avibratory heater moving in a path intersecting that of the knife arranged to beat out the trimmed inseam.

2. An inseam trimming machine having, in combination, a rotary inseam trimming knife having openings formed therein, and a beating member operating through the said openings to beat out the trimmed inseam.

3. An inseam trimming machine having,

in combination, av cylindrical trimming knife, an inseam heating means acting on the trimmed seam in close proximity to the untrnnmed portion of the seam.

4. An inseam trimming machine having,

in combination, a rotary cylindrical trimming knife having openings formed in the periphery of the knife, a beating member arranged to operate through said openings to beat out the trimmed inseam, and mechanism for operating the beating member in timed relation to the rotation of the knife.

5. An inseam trimming machine having, in combination, a rotary trimming knife having recesses formed in the periphery of the knife, a beating member having a surface for beating the Welt, and an offset portion extending beyond the cutting edge of the knife to beat the trimmed portion of the inseam, and means for operating the beating member in timed relation to the rotation of the knife to pound the trimmed portion of the inseam through the recesses formed in the knife.

6. An inseam trimming machine having, in combination, an inseam trimming knife moving transversely to the inseam and an intermittently acting beater arranged to act on the trimmed seam in close proximity to the untrinmied portion of the seam.

7 An inseam trimming machine having,

in combination, an inseam trimming knife moving transversely to the seam, a beater arranged to act on the trimmed seam, and means for actuating the beater in timed relation to the movements of the knife.

In testimony whereof I have signed my name to this specification.

ALFRED R. MORRILL. 

